Daily puzzle

Morning Joggers

Edition #16 medium Publish date: 2026-01-31 Print
Scenario

Four runners chose different routes and start times for their morning jogs. Use the clues to match each runner with a route and time.

Clues
  1. The runner who had Lake had 7 AM.
  2. The route River went with the start time 6:30 AM.
  3. The runner who had River did not have 7 AM.
  4. The route River did not go with the start time 7:30 AM.
  5. Eli did not have Lake or River.
  6. Hana did not have 6:30 AM, and did not have 7:30 AM.
  7. Jonas did not have 6 AM or 6:30 AM.
  8. Mira did not have either Park or Hill.
  9. Jonas did not have Lake, and did not have River.
  10. Jonas did not have Park, and did not have River.
Solved

Explanation

Reveal the reasoning
  1. Begin with the cross-category links that lock two items together. Here, Clue 1, Clue 2 connect Route, Start Time.
  2. Clue 1 links Lake (Route) with 7 AM (Start Time), so those two items must belong to the same runner.
  3. Clue 2 links River (Route) with 6:30 AM (Start Time), so those two items must belong to the same runner.
  4. Next, apply the elimination clues to shrink rows and columns before committing to any checks.
  5. Clue 5 rules out Lake and River (Route) for Eli, which forces the remaining options.
  6. Clue 6 rules out 6:30 AM and 7:30 AM (Start Time) for Hana, which forces the remaining options.
  7. Clue 7 rules out 6 AM and 6:30 AM (Start Time) for Jonas, which forces the remaining options.
  8. Whenever a runner has only one remaining option in a category, mark it as a check and cross out the rest (one-to-one). Keep propagating until every runner has exactly one match in each category.

Solution

Show solution mapping

Solve the puzzle to reveal the full mapping.

Order: Route / Start Time

  • Eli -> Park / 6 AM
  • Hana -> Lake / 7 AM
  • Jonas -> Hill / 7:30 AM
  • Mira -> River / 6:30 AM

About this puzzle

  • Published: 2026-01-31
  • Tags: transportfitnesslogic-grids
  • Validation: The puzzle JSON is validated at build time and a solver verifies there is a single intended solution.
  • Corrections: If you spot an issue, contact us with the puzzle date. See the editorial policy and the contact page.

FAQ

Do I need to guess?

No. Every GridCipher puzzle is designed to be solvable by deduction alone.

What is a good first step for Morning Joggers?

Start with clue 1. It locks in a concrete pairing between two categories, which you can immediately mark on the grid and use to eliminate other options. For example, it pairs Lake with 7 AM.

How do I mark a cell?

Click or tap a cell to cycle blank -> X -> check. Use X for no and check for the confirmed match.

Yes marks 0
No marks 0
Time 00:00
Status In progress
✓ = yes ✕ = no Blank = unknown

Tip: Shift-click or right-click to clear a cell quickly.

Runner x Route

Runner Lake Park River Hill
Eli
Hana
Jonas
Mira

Runner x Start Time

Runner 6 AM 6:30 AM 7 AM 7:30 AM
Eli
Hana
Jonas
Mira

Keep solving

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